倒装句练习答案及原因9.________ playing soldiers.A.Inside the room were

倒装句练习答案及原因
9.________ playing soldiers.
A.Inside the room were two boys
B.Inside the room two boys
C.Were two boys inside the room
D.Inside the room was two boys
23.Not once ______ their plan.
A.did they change B.they changed
C.changed they D.they did change